A beautifully eclectic mix of architectural styles.

The attic of a four-century-old canal house hides a clandestine church.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

A fascinating insight into daily life in the Eastern Bloc.

A surreal museum of extraordinary industrial objects.

The most visited, and possibly most controversial, museum in Germany.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Old Danish castle immortalized in Shakespeare's Hamlet.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

Copenhagen's celebrated theme park and gardens.

This luxury shopping lane has been protected by its own tiny police force for over a century.

Giant, friendly pelicans in Central London, the most unlikely of places.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

A cluttered and astounding collection of antiquities and curiosities.

Catacombs turned marketplace.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.